Improvement in combined bolt and key fasteners



E. H. SCHNELL.

COMBINED BOLT AND KEY FASTENER.

BIO-173,563; Patented Feb.15,1876.

VENT B:

wnuasszs: & I 4 @j W v M BY N PETER, PHDTOLITHOGHAPHER, WASHXNGTON.'D.C.

l l l .NITED STATES PATENT OFFICE.

EDWARD H. SCHNELIJ, OF SOUTH NOR-WALK, CONNECTICUT.

IMPROVEMENTIN COMBINED BOLT AND KEY FASTENERS.

Specification forming part of Letters Patent No. 173,563, dated February15, 1876 5 application filed January 29, 1876.

' To all whom it may concern:

' ot' the plates removed, andshowing the-position of'the key and boltfastener before fastening them. 7 Fig. 2 is an elevation, showing thepositionai'ter fastening them,and Fig.3 is a section on line av 00 ofFig. 2.

Similar letters of reference indicate corre sponding parts. r

A is a little block of metal, with a notch, B, in the upper end, wideenough to receive the key-bit C; also with a stud, D, on one side tolock the bolt E, which is fittedto slide up and down on the rod F,arranged under the bolt, and obliquely to it, as shown, and between theblock and its supporting-stud Gris a spring, H, which presses the blockto the upper end of the rod to lock the key and the bolt, as shown inFig. 2, the former being effected by thenotched end of the blockengaging the bit of the key,

and the latter by the stud D sliding into the notch in the lower edge ofthe bolt, between the shoulder I and the stud J. K is a springcatchemployed to hold the block back on the rod F, when it isv not to beused, by catching it in the notch L when it is shoved back, which isdone by hand with the stud-pin M, which screws into the block through aslot in the case from the inside. The spring-catch has the end N turnedup'in front of the notched end of the block, so that just after throwingthe bolt the block may be sprung to lock it and the key by turning thekey a little farther against said end N, and pressing the catch out ofnotch L. The key is notched at 0, so that it will pass under thespring-catch and not detach it when locking on the outside and taking.out the key. The stud M may be applied to either side of the blockthrough either side of the lock-case, so that the eontrivance isapplicable to reversible locks. The key locking-block may be usedwithout the spring H by working it by hand.

Having thus described my invention, I claim as new and desire to secureby Letters Patent r Y l. The combination of sliding notched block A andspring-catch K with the key of a lock,

substantially as specified.

